Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Production method of oversized crystalline fused magnesite
The invention provides a production method of oversized crystalline fused magnesite, which comprises the following steps: S1, adding 0.01%-2% of chromium oxide and/or 0.2%-2% of aluminum oxide additives into light calcined magnesia powder; s2, fully mixing the light calcined magnesia powder with an additive by using a ball mill; and S3, putting the mixed powder into an electric arc furnace for smelting, and cooling after complete reaction to obtain the oversized crystallized magnesia. According to the production method of the super-large crystalline fused magnesia, the super-large crystalline fused magnesia is obtained by introducing a very small amount of Cr2O3 and Al2O3, the grain size reaches a millimeter level and is about 3 times of that of large crystalline fused magnesia, and the super-large crystalline fused magnesia has the advantages of large grain size, high direct bonding degree among grains, few grain boundaries, few grain boundary impurities, good slag infiltration resistance and the like.
本发明提供一种超大结晶电熔镁砂的生产方法，包括以下步骤：S1：向轻烧氧化镁粉中，加入氧化铬和/或氧化铝的添加物，所述氧化铬的添加量为0.01％‑2％，氧化铝的添加量为0.2％‑2％；S2：将轻烧氧化镁粉与添加物用球磨机进行充分混合；S3：混合粉体投入到电弧炉中进行熔炼，待反应完全后冷却得到超大结晶镁砂。所述超大结晶电熔镁砂的生产方法，通过引入极少量的Cr2O3、Al2O3，得到一种超大结晶的电熔镁砂，晶粒尺寸达到毫米级，约为大结晶电熔镁砂晶粒尺寸的3倍，其具有晶粒尺寸大、晶粒间直接结合程度高、晶界少、晶界杂质少、抗熔渣渗透能力好等优点。
Production method of oversized crystalline fused magnesite
The invention provides a production method of oversized crystalline fused magnesite, which comprises the following steps: S1, adding 0.01%-2% of chromium oxide and/or 0.2%-2% of aluminum oxide additives into light calcined magnesia powder; s2, fully mixing the light calcined magnesia powder with an additive by using a ball mill; and S3, putting the mixed powder into an electric arc furnace for smelting, and cooling after complete reaction to obtain the oversized crystallized magnesia. According to the production method of the super-large crystalline fused magnesia, the super-large crystalline fused magnesia is obtained by introducing a very small amount of Cr2O3 and Al2O3, the grain size reaches a millimeter level and is about 3 times of that of large crystalline fused magnesia, and the super-large crystalline fused magnesia has the advantages of large grain size, high direct bonding degree among grains, few grain boundaries, few grain boundary impurities, good slag infiltration resistance and the like.
本发明提供一种超大结晶电熔镁砂的生产方法，包括以下步骤：S1：向轻烧氧化镁粉中，加入氧化铬和/或氧化铝的添加物，所述氧化铬的添加量为0.01％‑2％，氧化铝的添加量为0.2％‑2％；S2：将轻烧氧化镁粉与添加物用球磨机进行充分混合；S3：混合粉体投入到电弧炉中进行熔炼，待反应完全后冷却得到超大结晶镁砂。所述超大结晶电熔镁砂的生产方法，通过引入极少量的Cr2O3、Al2O3，得到一种超大结晶的电熔镁砂，晶粒尺寸达到毫米级，约为大结晶电熔镁砂晶粒尺寸的3倍，其具有晶粒尺寸大、晶粒间直接结合程度高、晶界少、晶界杂质少、抗熔渣渗透能力好等优点。
Production method of oversized crystalline fused magnesite
一种超大结晶电熔镁砂的生产方法
ZHANG RONGHUI (Autor:in) / YANG HAIFENG (Autor:in) / WANG LILI (Autor:in) / QIN YING (Autor:in)
28.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Fused magnesite production device and preparation method
| Europäisches Patentamt | 2020